Qiu Bao'an, a knife and scissors maker based in east China's Zhejiang Province, presents a knife with engraved patterns at the China Huangshan Intangible Cultural Heritage Skills Exposition in Huangshan, east China's Anhui Province, Nov. 7, 2012. A total of 237 Chinese intangible cultural heritage items will be exhibited during the five-day event, which opened here on Wednesday. (Xinhua/Xu Zijian)